The Meyer Gage M11MMM Steel Pin Gage Set Class Z has the following specifications:

Range: 1.53 to 7.71mm

Pins: 310

Weight (lbs.): 10

Meyer Gage started making the original class ZZ pin gage sets back in 1965 and has now taken the extra step for the better pin gage, Class Z. Introducing the MEYER Z. A closer tolerance (.0001), more accurate and better for your needs. We have done it again. We've made a better pin gage that no other has attempted with the same great features listed below. The Meyer Gage Class Z gage pin will meet or exceed the requirements of Class ZZ, and can replace the Class ZZ in any situation or application.